Norafin Crystalen - Creating Solutions in Filtration

Medical Industrial Automotive Filtration Ap parel2012 Page 1

Experience in Filtration


Chapter Head

� Norafin‘s snap shot presentation� Technology principle & Products options� Intrinsic Performance - Advantages of Spunlaced Filtermedia� Practical cases � „Membrane-like“ Spunlaced Filtermedia


Snap shot presentation of Norafin’s company

One company

One trade mark

One core technology SPUNLACING / HYDRO-ENTANGLING

NORAFIN GmbHSales&Marketing: Müllheim D– Plant: Mildenau D

Medical

Protective Barriers

VariousCore

Applications Special & Technical Applications

Filtration


Norafin‘s Production Site in Mildenau


Hydro entangling / SpunlacingNeedle punching

Technology’s principle


manufacturing process flow

nozzle web B

scrim

web Asupportingelement Micro fine high pressure water jets

scrim -supportednonwoven composite

Layer bonding by hydroentangling



Hydro-entangling / Spunlacing line:



Product Options

Multiple Fiber Types

� “standard” fiber types (Viscose, PET, PP, PA, PAN etc)

� natural fibers: cotton, flax, kapok…

� fine, micro and “microsplit“ fibers

� high performance fibers: PTFE, P84, PIA, PPS, Nomex®, Kevlar®

� Conductive/Antistatic: SilveRSTAT®, Epitropic®

Multi-layering capabilities for gradient density st ructures

Weights from 40gsm up to 700 gsm

� Scrim reinforcement: synthetic fabric, glass fabric, metal net

� No scrim damaging neither needles damaging (metal scrim, stiff/strong synthetic nets)

Multiple after-treatment options including

� heat setting, singeing, calandering

� chemical finishing: impregnation (binder, FC…), foam coating


High Performance Spunlaced Filtermedia

For Fine Dust/Particles Collection


Intrinsic Performance - Advantages of Spunlaced Filter MediaSpunlace Technology:

� 3D, tight and dense fibers entanglement by high pressure water jets

Lower Emission� High Filtration Efficiency� Fine pore size� Tight pore size distribution� Superior surface & cross section homogeneity

Longer Life Time� Mechanical Strength � No scrim damaging� High density of fiber entanglement� Less dust penetration

Energy & Cost Savings� Lower pressure drop� 10 to 15% less fibers needed

Spunlace Media

Needlepunch Media


Practical case 1: Norafin® PET scrimless filter media for Fine Dust Filtration

PET 500gsmNorafin

72.320.820

Air permeability 97 144DIN EN ISO 9237 [l/dm²/min]

Physical Properties

Test parameters Standard Unit

Elongation CDDIN EN 29073-3

DIN EN 29073-3[N/5cm] 1612

[%]ISO 9073-3

Elongation MDDIN EN 29073-3

[%]ISO 9073-3

22

51

Tensile strength CDISO 9073-3

Tensile strength MDDIN EN 29073-3

[N/5cm]ISO 9073-3

ThicknessDIN EN 29073-2

[mm]ISO 9073-2

Results

472

1.53

1184

1.23

322WeightDIN EN 29073-1

[g/m²]ISO 9073-1

43

36

812

1168

Pore Portion Mean flow pore size Bubble Point

Pore size [µm]0 5 10 15 20 25 30 35 40 45 50

Por

e P

ortio

n [%

]

0

2

4

6

8

10

12

14

16

18

20

PET 500gsm Needlefelt

Norafin 320gsm Spunlace

Porenanteil Mean Flow Pore Size Bubble Point

Porengröße [µm]0 5 10 15 20 25 30 35 40 45 50

Por

enan

teil

[%]

0

2

4

6

8

10

12

14

16

18

20

Product: PET Norafin 320 gsmCompared to: PET Needlefelt + Glazed surface 500gsm


Practical case 1: Norafin® PET scrimless filter media for Dust Filtration

0%

20%

40%

60%

80%

100%

0.1 1 10 100

Particle size [µm]

Fra

ctio

nal e

ffici

ency

PET 500gsm

72.320.820

Test dust: Pural SBTest area: 0,0176 m²Dust concentration: 30 mg/m³Volume flow: 2,1 m³/hDate: 21/02/2008Temperature: 26,2°CRel. Humidity: 31.3%

Test parameters

0

100

200

300

400

500

600

700

0 5 10 15 20 25 30Volume flow [m³/h]

Diff

eren

tial p

ress

ure

[Pa]

PET 500gsm

Norafin72.320.820

Test area: 0,0176 m²Min. Volume flow: 5 m³/hMax. Volume flow: 25 m³/hStep size: 10%Date: 04/03/2008Temperature: 23,6°CRel. Humidity: 36.8%

Test parameters

Differential pressure – ref VDI3926Fractional Efficiency – ref VDI3926

Product: PET Norafin 320 gsmCompared to: PET Needlefelt + Glazed surface 500gsm

0%

20%

40%

60%

80%

100%

0.1 1 10 100

Particle size [µm]

Fra

ctio

nal e

ffici

ency

PET 500gsm

Norafin72.320.820Norafin72.400.820

C

0

100

200

300

400

500

600

700

0 5 10 15 20 25 30Volume flow [m³/h]

Diff

eren

tial p

ress

ure

[Pa]

PET 500gsm

Norafin 72.320.820

Norafin 72.400.820


Practical case 2: Norafin® P84 filtermedia for High Temperature Bag Filter

Norafin P84/GF 400GSM SpunlaceAverage Pore Size: 14µmP84/P84 550GSM Needle Felt

Average Pore Size: 37µm



Item StandardNeedled

felt550gsm

Norafin64.400.831

Weight [g/m²]DIN EN 29073-

1/ISO 9073-1

542 400

Thickness [mm]

DIN EN 29073-2/ ISO 9073-2

3.21 2.07

Air permeability [l/dm²/min] @200 Pa

DIN EN ISO 9237

184 169

Mean Flow Pore Size (µm)

TOPAS PSM 92.720.3

Mean Pore Size (µm)

TOPAS PSM 73.915

Tensile strength [N/5cm]

MDDIN EN 29073-3/ ISO 9073-3CD

465

1412

915

810

Elongation at break [%]

MDDIN EN 29073-3/ ISO 9073-3CD

10.4

45

20

9

Needled felt

550gsm

Norafin64.400.831

Overall fractional efficiency [%]

96.89 97.5

Clogging rate [g]

5.2 2.8

Differential pressure at 25 m3/h

297 361



� Municipal Waste Incineration plant, 40 bags in trials � Total number of bags: 800� Filter type: LURH� Temperature: 150°C – Peak 180°C – 200°C� Quality: P84® /GF 400 g/m² , PTFE anti acid treatment –traditional bags in place P84® / P84® 550g/m²� Process: dry sorption� DeltaP: 180 mmCE� Gas volume: 25 000 Nm3� H20 : 20%� SO2 : 150mg/Nm3 - NOx : 240-350mg/Nm3

� Jet pulsing: 6 bar� Dust emission: < 10 mg/Nm3� Start up: June 2004



� Testing period of 36 months� Filter bags showed no dust penetration� Moderated degradation of the operational performance

Data Remaining characteristic

Tensile strength 74,7 %

Air permeability (after washing)

90,5 %

Non reversible dust holding

2,4%


Practical case 3: Norafin® P84 Selfpleatable media - Metal scrim

Product’s featuresActive Filter layer:

� Tight & well controlled pore size distribution� Less open areas and no “going though” channels� High Filtration Efficiency – Unique high-density fiber entanglement due to the spunlace technology� High temperature resistance: 100% P84 fiber

Supporting metal scrim:

� No scrim damaging (neither needles damaging!)� High tensile strength and Mullen burst strength� Compatible to wide open pleat spacing and shallow pleat depth� Resin free system - No temperature limitation due to the stiffening resin/binder

Norafin Polyimid selfpleatable media


Practical case 3: Norafin® P84 Selfpleatable media – Metal scrim

Norafin PleatX P84S64.650.840

� High Temperature Cartridge filter Natural Gas filtration

� Filtration efficiency test:



� High Temperature Cartridge filter Natural Gas filtration

� Lamination/Spunlacing of a top layer PTFE microweb (fiber diameter df50 8,8µm)

� Filtration efficiency test:Norafin PleatX P84 + PTFE MicrowebS64.650.842



� High Temperature Pleated filter bag Dust collection in Municipal/Hospital/Industrial Waste Incinerators, Industrial processes (TiO2…)

� Technical investigation of pleated filter bag after 3 months at 200C operation in a Hospital Waste Incinerator shows no dust penetration

Dust cake remains on top surface – no dust penetration occurred

Metal mesh wires


“ Membrane-Like” High Performance Filtermedia


Top layered filtermedia

Product’s structure

� Top layered structure

� Various possibilities in type and fineness of top surface fiber,

2.2 dtex

3.3 dtex

Fine fiber1.7 – 1.3 – 1.1 dtex

Micro fiber 0.9 – 0.6dtex

MicroSplit fiber 0.4 – 0.2dtex

Nano fiber


Practical case 4: Norafin® Micro fiber top layered filtermedia

Product: PET Norafin 180 gsm – top layered with 1.3d tex Compared to: PET Spunbond 260gsm

Test dust: Pural SBTest area: 0,0176 m²Dust concentration: 50 mg/m³Volume flow: 2,1 m³/hTemperature: 25,0°CRel. Humidity: 36.3%

Test parameters

Test area: 0,0176 m²Min. Volume flow: 5 m³/hMax. Volume flow: 25 m³/hStep size: 10%

Test parameters

Differential pressure – ref VDI3926Fractional Efficiency – ref VDI3926


Practical case 4: Norafin® Micro fiber top layered filtermedia

Product: PET Norafin 180 gsm – top layered with 1.3d tex Compared to: PET Spunbond 170gsm & 235gsm

Test dust: Pural SBTest area: 0,0176 m²Dust concentration: 50 mg/m³Volume flow: 2,1 m³/hTemperature: 25,0°CRel. Humidity: 36.3%

Test parametersFractional Efficiency – ref VDI3926

Test area: 0,0176 m²Min. Volume flow: 5 m³/hMax. Volume flow: 25 m³/hStep size: 10%

Test parameters


Custom made double layer spunlaced filtermedia

Spunlaced Fine fiber/ MicroSplit

KUNIT®

www.stfi.de

� HYCOKNIT ®

Spunlaced Meltblown

Needlefelt

www.stfi.de

� HYCOSPUN ®

� YOUR TAILOR MADE PRODUCT ®



Product’s structure

� Top layered structure

� Various possibilities in type and fineness of top surface fiber,

2.2 dtex

3.3 dtex

Fine fiber1.7 – 1.3 – 1.1 dtex

Micro fiber 0.9 – 0.6dtex

MicroSplit fiber0.4 – 0.2dtex

Nano fiber?



Product’s feature

� Top surface oriented filtration – “Membrane-like” effect� High filtration efficiency …

…by combining hydro-entangling technology with fine, micro or sub-micro fibers

� Reliable: high density fiber entanglement even with the finest fibers (no destructuring of top layer with needles), very good fiber entanglement at the top layer/back layer frontier

� Cost effective: one shot process, no additional process step (no lamination, no post process), moderated speed decrease (MicroSplit fiber)


Top layered filtermedia with MicroSplit fibers

Description

SpunlacingWith High Pressure

Water jets


Various MicroSplit fibers

� Matrix/Segment

� Full Segmented

Improve drainability Depth filtration

Higher density – Higher Filtration efficiencySurface filtration orientation

� Possibilities of blends


Practical case 5: Norafin® MicroSplit filtermedia

Product: Norafin 100 gsm - 100% self-supported MicroSplit


Test parameters

Fractional Efficiency – ref VDI3926

0%

20%

40%

60%

80%

100%

0.1 1 10 100Particle size [µm]

Fra

ctio

nal e

ffici

ency

100gsm Spunlace 100%MicroSplit

100gsm Spunlace 100%MicroSplit + Nano fiber "coating"

100gsm Spunlace 100% 1,3dtex


Practical case 5: Norafin® top layered filtermedia with MicroSplitProduct: Norafin 320gsm + 100gsm top layer of MicroSplit

Norafin 320gsm + 100gsm top layer of 0.9dtexCompared to ePTFE Membrane laminated on 500gsm ne edlefelt


Test parameters

50%

60%

70%

80%

90%

100%

0.1 1 10 100Particle size [µm]

Fra

ctio

nal e

ffici

ency

Spunlace + Top layered0.9dtex

Spunlace + Top layeredMicroSplit

ePTFE Membrane

Fractional Efficiency – ref VDI3926

0

200

400

600

800

1000

1200

1400

1600

0 5 10 15 20 25 30Volume flow [m³/h]

Diff

eren

tial p

ress

ure

[Pa]

Spunlace + top layer MicroSplit

Spunlace + top layer 0.9dtex

ePTFE Membrane

Differential pressure – ref VDI3926

Test area: 0,0176 m²Min. Volume flow: 5 m³/hMax. Volume flow: 25 m³/hStep size: 10%Date: 04/03/2008Temperature: 26,7°CRel. Humidity: 34.5%

Test parameters


With MULTIPLE INNOVATIVE possibilities

NORAFIN intends to

PROVIDE

TAILOR MADE

HIGH PERFORMANCE FILTRATION SOLUTION

Vincent LORENTZ Business Development Manager

Filtration

[email protected]: +33 688 00 12 17

www.norafin.com

Date post:	27-Mar-2022
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Norafin Crystalen - Creating Solutions in Filtration

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